HFS+ partitions

• check "kernel configure"
  less /boot/config-2.6.18-164.* |grep  MAC_PARTITION
  
  CONFIG_MAC_PARTITION=y  means one can do "read", "write", or "both".
• check device, which one connect to Linux machine
• mkdir /media/test
  
• mount -t hfsplus /dev/sda3 /media/test
  if you gdm or whatever display manager mounts the device automatically, try to do it in a console (CTRL+ALT+F1).
• journal must be turned off in order to get a write permission on your device.
  http://en.wikipedia.org/wiki/HFS_Plus#Linux